Dual directional opening type mail envelope

ABSTRACT

A dual directional opening type mail envelope has opening start section with cutting part and cutting lines marked with arrows in the center that can be cut from both sides and a cutting part that had been partly cut beforehand. Dual directional opening type mail envelope includes an opening start section with a cutting part and cutting lines marked with arrows that open when the thumb and index finger of the left hand flips the cutting part back where first and second cutting line are opened cleanly and rapidly and as thumb nail on the right hand is inserted into the gap to move left and right as cutting lines are comprises of arrows placed with distance which ensures an easy and quick opening of the envelope will be opened rapidly as a flying arrow without leaving any residue.

FIELD OF THE INVENTION

The present invention relates to a dual directional opening type mailenvelope and more specifically, an envelope that has opening startsection with cutting part and cutting lines marked with arrows in thecenter that can cut from both sides and a cutting part that had beenpartly cut beforehand. Dual directional opening type mail envelopeincludes an opening start section with cutting part and cutting linesmarked with arrows that open when the thumb and index finger of the lefthand flips the cutting part back where first and second cutting linesopens cleanly and rapidly and as thumb nail on the right hand isinserted into the gap to move left and right as cutting lines arecomprises of arrows placed with distance which ensures that the envelopewill be opened rapidly as a flying arrow without leaving any residue.When thumb nail of the right hand opens the envelope to the left,direction of the arrows are towards the left and when it opens theenvelope to the right, direction of arrows are to the right which makesit easy to open the envelope from both directions at the center withoutany trouble and prevents pieces of envelope from falling off as it doeswhen it is not opened easily and there is no need to clean up afteropening the envelope as dual directional opening type mail envelope isdesigned to be environmentally friendly.

BACKGROUND ART

Use of electronic mail is commonplace in this modern age but the amountof sending regular mail has increased even more than before. Mail sentthrough the post is still considered as important method ofcommunication and most bills and notices from public office are sent inthe regular mail.

In the case of standard envelopes that are currently being used, theenvelope is sealed with adhesives such as glue after inserting thecontent inside the envelope. It is very bothersome to open the sealedpart of the envelope with hands when recipient has received the mail tocheck the content of the mail. Process of opening the mail isinconvenient and content may be partly damaged when the envelope isopened with force when size or the content had been undetermined.

When there are cutting equipments such as scissors or knives nearby, itis more convenient to open the envelope. In most cases, content can bepartly cut after the envelope has been opened using scissors or kniveswhen size of the envelope and the content is similar to each other.

Furthermore, after the envelope has been opened using hands or cuttingmeans, pieces of paper that fell off from the envelope during theopening process makes the surrounding area untidy. Pieces of paper arethrown away anywhere as the envelope is torn apart.

There are cutting lines provided in envelopes that are sent out frompublic office or financial institution to prevent this type ofinconvenience, which cutting lines enable the recipient to convenientlyopen the envelope. However, one has to be very careful while opening theenvelope along cutting line as some do not open properly and even if itdoes, it tends to deviate from the cutting lines when it is beingopened.

When envelope with cutting lines is not opened in slow and carefulmanner, it strays from the cutting lines and opens in a messy way aspaper has no texture and is torn irregularly unlike fiber which is tornalong with ply.

As the cutting lines of currently used envelope with cutting line do notserve its purpose, people tend to open it in the same manner as regularenvelopes after trying to open the envelope by using the cutting linesupon receiving it.

In order to solve the above problem, the applicant of the presentinvention has acquired Korean Registered Patent No. 10-1130701 known as‘One touch type mail envelope’ which is an envelope comprising first andsecond cutting lines that are placed diagonally where one-touch materialis adhered behind the front or the back side for end part to overlapwith the cutting line in order to easily open the envelope along thecutting line as one-touch material is bent back.

Need for technology that opens the envelope cleanly without usingcutting equipments was realized through manufacturing envelopesaccording to above-mentioned patent as it is not easy to print neatly onthe envelope when one-touch material is inserted.

SUMMARY OF THE INVENTION

Accordingly, present invention has been made in view of the abovementioned problems occurring in the prior art, and it is an object ofthe present invention to provide environmentally friendly dualdirectional opening type mail envelope that opens cleanly and rapidlywithout leaving any residue which is easy to open in both sides from thecenter without any trouble and also prevents pieces of envelope fromfalling off when envelope is torn apart because it is hard to open.

To accomplish the above object, dual directional opening type mailenvelope according to the present invention comprises an opening startsection in the center for envelope to be cut open in both directionsfrom the center, a part of the cutting start section being cutbeforehand to form a cutting part.

Furthermore, the opening start section may include at least onearrow-marked cutting lines of arrow shape placed with distance from theend part of cutting line.

Furthermore, the cutting part is formed in half circle shape as a whole,and the arrow-marked lines may be placed with distance from each otherwhen there is a plurality of the arrow-marked cutting lines.

Furthermore, both ends of the opening start section are provided withfirst and second cutting lines, respectively, the first and secondcutting lines are formed by a plurality of arrow-marked cutting lines ofarrow shape placed consecutively and repeatedly, the arrow-markedcutting lines being placed with distance from each other.

In addition, arrows of the arrow-marked cutting lines of the firstcutting line and second cutting line are placed in opposite directionsin order to open in different directions toward both sides from theopening start section.

The effect of envelope opening cleanly and rapidly is provided throughthe opening start section with cutting part and cutting lines markedwith arrows in the center as thumb and index finger of the left handflips the cutting part back and as thumb nail on the right hand isinserted into the gap to move left and right into first and secondcutting line according to the present invention.

The effect of opening the envelope easily from both directions at thecenter without any trouble is provided as first and second cutting linescomprise of arrows facing opposite directions which ensures thatenvelope will be opened rapidly as a flying arrow without leaving anyresidue according to the present invention as thumb nail of the righthand opens the envelope to the left, direction of the arrows are towardsthe left and when it opens the envelope to the right, direction ofarrows are to the right.

The effect of providing environmentally friendly envelope is provided inwhich it prevents pieces of envelope from falling off as envelope istorn apart when it is hard to open thus eliminating the need to cleanthings up according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a rear view illustrating dual directional opening type mailenvelope according to an embodiment of the present invention.

FIG. 2 is a detail view illustrating an opening start section of FIG. 1.

FIG. 3 is a detail view illustrating arrow-marked cutting lines.

FIG. 4 is a detail view illustrating a plurality of arrow-marked cuttinglines.

FIG. 5 is a concept view illustrating the comparison between two typesof arrow-marked cutting lines.

FIG. 6 is a concept view illustrating envelope of FIG. 1 being opened.

FIG. 7 is a rear view illustrating dual directional opening type mailenvelope according to another embodiment of the present invention.

FIG. 8 is a rear view illustrating dual directional opening type mailenvelope according to yet another embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The preferred embodiments of the present invention will be describedwith reference to the accompanying drawings. In regards to numberslabeled in the embodiments of the drawing, it is to be noted that labelswill stay the same even when the drawing changes when it concerns thesame embodiments. Furthermore, detailed explanations that are consideredto obscure the gist of present invention are not included in thespecification. While the present invention has been described withreference to the particular illustrative embodiments, it is not to berestricted by the embodiments but only by the appended claims. It is tobe appreciated that those skilled in the art can change or modify theembodiments without departing from the scope and spirit of the presentinvention.

FIG. 1 is a rear elevation illustrating dual directional opening typemail envelope according to the embodiment of present invention. FIG. 2FIG. 2 is a detail view illustrating the opening start section of FIG.1, FIG. 3 is a detail view illustrating cutting lines marked with arrowsin detail, and FIG. 4 is a detail view illustrating multiple cuttinglines marked with arrows in detail. FIG. 5 is a concept drawingillustrating the comparison between two types of cutting lines markedwith arrows. FIG. 6 is a concept drawing illustrating envelope of FIG. 1being opened.

In description below, side of the envelope that does not have a sealedpart is described as the front part and side of the envelope with sealedpart in the middle is described as the back side for convenience.Illustration in FIG. 1 is mostly used in mail envelope which is commonlyknown as a small envelope.

Referring to FIGS. 1 to 5, dual directional opening type mail envelopein accordance with an embodiment of the present invention includesopening start section 2, first cutting line 8 and second cutting line10.

The opening start section 2 is located in the middle in order to openthe envelope in both directions in the middle and placed below a cover(C) that seals the envelope by applying glue to a back side of thecover. The opening start section 2 may be formed in shape of a halfcircle but this application does not limit the shape of the openingstart section.

The opening start section 2 comprises cutting part 4 and arrow-markedcutting line 6.

The cutting part 4 is placed in a part of opening start section 2 andhad been partly cut beforehand. Accordingly, thumb and index finger ofthe left hand flips the cutting part 4 back and the aperture of thecutting part 4 will be opened where first cutting line 8 and secondcutting line 10 are opened cleanly and rapidly and as thumb nail on theright hand is inserted into the aperture (gap) to move left and right asillustrated in FIG. 6 for right-handers. For left-handers, thumb andindex finger of the right hand flips the cutting part 4 back and thumbnail of the left hand should be inserted in the open gap.

As seen on FIG. 2, insert groove 5 may be additionally placed on thecutting part 4. When the insert groove 5 is provided, it is easy toinsert the thumb nail of the right hand even when cutting part 4 is notflipped over.

Arrow-marked cutting line 6 is placed with distance from end part of thecutting part 4 in shape of an arrow. There may be more than onearrow-marked cutting line 6 on the opening start section 2. When thereare multiple arrow-marked cutting lines 6, the arrow-marked cuttinglines 6 are placed with distance from each other, as shown in FIG. 2.

First cutting line 8 is placed at the left end part of the opening startsection 2. The first cutting line 8 is comprised of multiple arrowshaped cutting lines placed consecutively and repeatedly.

Arrows of the arrow-marked cutting line of the first cutting line 8 allface left. Therefore, first cutting line 8 is detached along the cuttinglines marked with arrows placed with distance when thumb nail on theright hand is inserted into the gap and moves to the left to open theenvelope rapidly as a flying arrow without leaving any residue. Theenvelope is opened neatly without leaving any residue as cutting linesare in the shape of an arrow. As details regarding cutting lines markedwith arrows for first cutting line 8 are the same with cutting linesmarked with arrows for second cutting line 10 except that they faceopposite directions, it will be explained together in part of thespecification that explains FIGS. 3 and 4.

Second cutting line 10 is placed on the right end part of the openingstart section 2. The second cutting line 10 is comprised of multiplearrow shaped cutting lines placed consecutively and repeatedly.

Arrows of the arrow-marked cutting line of the second cutting line 10all face right. Therefore, second cutting line 10 is detached along thecutting lines marked with arrows placed with distance when thumb nail onthe right hand is inserted into the gap and moves to the right to openthe envelope rapidly as a flying arrow. The envelope is opened neatlywithout leaving any residue as cutting lines are in the shape of anarrow in the same manner with first cutting line 8.

With reference to FIG. 3 and FIG. 4, cutting lines marked with arrowsinclude cross cutting line 12 and wedge cutting line 14. The crosscutting line 12 and wedge cutting line 14 are perforated and cutbeforehand. One end of the cross cutting line 12 (a left end as based onFIGS. 3 and 4) is connected to obtuse part of the bent section in thewedge cutting line 14 and other end (a right end as based on FIGS. 3 and4) is not connected to acute (inner) part of the bent section in thewedge cutting line 14 and separated by a small distance. Therefore,there is a paper part between cross cutting line 12 and wedge cuttingline 14 that has not been cut.

With reference to FIG. 5, when the arrow-marked cutting line is shapedin the manner of FIG. 5( a), according to the actual experiment,envelope does not cut easily and residue may be left because the residuehas departed from the cutting line during cutting. As for the structureof 5(a), right end part of the cross cutting line is connected to thewedge cutting line and left end part is not connected to the wedgecutting line and separated by a small distance.

On the other hand, one end part (left end part) of the cross cuttingline in FIG. 5( b) connects to the wedge cutting line and the other endpart (right end part) is not connected to the wedge cutting line andseparated by a small distance. In case of FIG. 5( b), envelope is cutneatly and rapidly without any residue. Paper tends to be cut inirregular manner as it has no texture but with the structure of FIG. 5(b), it prevents straying from the cutting line and cuts neatly andrapidly along the arrows.

Thumb and index finger of the left hand flips the cutting part 4 backand the aperture of the cutting part 4 will be opened where firstcutting line 8 and second cutting line 10 are opened cleanly and rapidlyand as thumb nail on the right hand is inserted into the aperture (gap)to move left and right one time for each side as illustrated in FIG. 6for right-handers.

FIG. 7 is a rear view illustrating dual directional opening type mailenvelope according to another embodiment of present invention.

Example of FIG. 7 is the method that administrative office or financialinstitution uses and also for international air mail where first cuttingline and second cutting line is formed in order for them to form anincline for a fixed angle as shape of the cover that adhesive is placedon the side is triangular.

FIG. 8 is a rear view illustrating dual directional opening type mailenvelope according to yet another embodiment of present invention.

Example of FIG. 8 can be most commonly applied to the file envelope forA4 papers. It is similar to FIG. 1 except for the fact that assistingcutting line 20 is placed on the left end part of first cutting line andright end part of second cutting line in the shape of short and longdash lines or two short and long dash lines.

It has not been illustrated but in case of large envelopes like theexample for FIG. 8, first cutting line and second cutting line is formedin a straight line until the end where envelope can be easily opened byinserting the finger in the part where front and backside of theenvelope overlaps.

While specific implementations are discussed, it should be understoodthat this is done for illustration purposes only. A person skilled inthe relevant art will recognize that other components and configurationsmay be used without parting from the spirit and scope of the disclosure.It should also be understood that the above-described examples are notlimited by any of the details of the foregoing description, unlessotherwise specified, but rather should be construed broadly within itsspirit and scope as defined in the appended claims, and therefore allchanges and modifications that fall within the meets and bounds of theclaims, or equivalences of such meets and bounds are therefore intendedto be embraced by the appended claims.

[Description of Reference Numerals]  2 - Opening start section  4 -Cutting part  6 - Arrow-marked cutting line  8 - First cutting line 10 -Second cutting line 12 - Cross cutting line 14 - Wedge cutting line 20 -Assisting cutting line

What is claimed is:
 1. A dual directional opening type mail envelopecomprising an opening start section in the center for envelope to be cutopen in both directions from the center, wherein a part of the cuttingstart section is cut beforehand to form a cutting part, the cutting partis provided with an insert groove, both ends of the opening startsection are provided with first and second cutting lines, respectively,the first and second cutting lines are formed by a plurality ofarrow-marked cutting lines of arrow shape placed consecutively andrepeatedly, the arrow-marked cutting lines being placed with distancefrom each other, and wherein the arrow-marked cutting line comprises across cutting line and wedge cutting line that had been cut beforehand,one end of the cross cutting line is connected to obtuse part of thebent section in the wedge cutting line and the other end is not connectto acute part of the bent section in the wedge cutting line to be spacedapart therefrom, so a paper part that has not been cut exists betweenthe other end part of the cross cutting line and the wedge cutting line.2. The dual directional opening type mail envelope of claim 1, whereinthe opening start section includes at least one arrow-marked cuttinglines of arrow shape placed with distance from the end part of cuttingline.
 3. The dual directional opening type mail envelope of claim 2,wherein the cutting part is formed in half circle shape as a whole, andthe arrow-marked lines are placed with distance from each other whenthere are a plurality of the arrow-marked cutting lines.
 4. The dualdirectional opening type mail envelope of claim 1, wherein arrows of thearrow-marked cutting lines of the first cutting line and second cuttingline are placed in opposite directions in order to open in differentdirections toward both sides from the opening start section.